Machine for forming loom pickers



- Oct. 28, 1930. W, A BOHNE MACHINE FOR FORMING LOOM PICKERS Filed April 9, 1929 4 Sheets-Sheet l Oct. 28 1930. w. A.BoHNE 1,780,111

r 'A I MACHINE FOR FORMING LOOM PICKERS Filed April 9, 1929 4 Sheets-'Sheet 3 Q1: fl-5f -fj W I L" fuif/e,

Oct. 28, 1930. W .A BOHNE 1,780,111

MACHINE FOR FORMING LOOM P'ICKERS Filed April 9. 1929 4 Sheets-Sheet 4 Patented Oct. 28, 1930 U,N1TED; ,S`TArss PAT ENT.. ovp-p1 CE WILLIAI'fI` A.; BONNE,A or PHILAIJNILPHIA, raNNsYLvANIA, Ass'IGNOR To E. F.

j HOUGHTON &OOM1 `ANY, or 'r'IiILADELPI-IIA, rENNsamretira` A CORPORATION or" PENNSYLVANIA -j MACHINE rOaroRMINe Loo'ivIrIcxERs y ,Application ied April 9, 192e. serial No. 353,?"54Q-v rihis rinventionrelates 'to an improvement in the method of orininglO-oni pickers and, more particularly, refers to a new and novel method of making suoli articlesfrom leather,

or other material adapted to be compressed andormed as hereinafter described.

1n forming loom' pickers made of leather' l or othersimIlarmaterIal, it iscustomary to buildup the structure of the picker from suitably cutleather pieces by positioning such material in their relative places and then Se -curing them temporarily in such pioper ref lationship byvmeans' of a nail'or tack. The element is immersed in `a solution of `hot Wax or rother impregnating compound until per-4 fectlyvlexible and pliable and subsequently positioned in amould of suitable shape Where pressure. is applied., When the element hasV been pressed into shape, the mouldis cooled,

oyW-ater or `other cOOlingmeanS, thus soli-d.

'iiiying the Wax Or `suitable'.impregnating compouiidiused. if A* pickery formed in this manner has va large degree oi hardness andstability due, first,`to the pressure applied in the mouldingmachine and, second, tothe im-l used were only forthe purpose of ,tempora-v f rilyliolding togetherthe structure as initially tis the principal object of this invention to., provide suitable and .economical means for efficiently andV automa'tically moulding and cooling a. p'lrirality of lloom rpickers in 1 one operation, whereby a great-saving Ot .time

and increase in the quality of picker is et` y rfeet-ed;

Tlieiiivention furtherresides in theprovisieno-f novel apparatus .for carryingfout my invention .asf hereinafter vdescribed taken in connectionwvith the following drawinganof which Y Y y n Fig.Y lfisaplaii viewviof the entire apparatus, Y, a 1 rfi Y vFig. Qisalsection onth'e'line 2er-2.0i, Fig.v 1 Figi-8 sectiOnfonjthelineB- of Fig.l 1

Fig. l is a .section on the line -fl of '1 ;k

5is a sidefviewotllig. 1 showing particularlyfin section thepressur-e and Waste-i.y

Water `control valves f Fig. 6y i-s a view showing the detail con- Y struction of the mould.; and

Fig. 7 isa view showiiigwt'he completed ioulded unit. Y i

rReferring tothe drawings, Fig'. 1 repref seiits a perfectedi'orm of apparatus whereby my inveiition'may be practiced Which consists Ot a rectangular cast-iron cooling basin or trough 1 supported on any suitable stand 15, which is reinforced on the sides by the rods 5 bolted tok projections 6 `which( are integral Withthe basin. -lfirranged'iii thefour .f

corneisof the basin and suitably attached thereto, as will be herein described, are theV ce p moulds and cooperating apparatus. It is tok f lbe noted that eaehof thefour moulds' are identicaliii, characteristics and; equipment, 1, therefore, for ,the purpose of'brevity and.V

clarity, We will uiidertalreto describe y only on'e of the particular mould units,inasmuch as the description will apply yto each` one simi-` larly. A 'i 'llliemoulds, as shownA in Figs. 1y and 6, are

composedl of? the side, p iece.v T'formiiig one side of themould, and arrangedto be fastened tothe vbasin by means of bolts 8, 8, the p'resfl sure applying members 9 and 10,.actuated by the pistons vll'aiid 12' andi 'fastened thereto' bythe set screws 13, 13, the Vbase 14 .pro-

,. vided With an'aperture 14 to receive the i'iller member 1S, andattached thereto shapingk piecely secured and restrained to the baseby the bolt 16 and'dovvel pin 17.# The base 14 is further provided with holesr drilledres in-V dicated to receive the springs 113, as 'shown in Fig. 3, Whichfunctioiis to disengage the base 111 andtheformed picker from the stationary side kpiece of the mould when tlieniould is opened..V The top p'ece 190i the mould is provided with an 'f `aperture 19 adapted to receive the iller'member 18 and it isso shaped as to provide flanges 23 which cooperate with grooves 24; in theside pieces 7l and 9 iespec-- tively, so that vwhen theinould is closed, they providev a self-adjusting clamping'means to effectively restrainthe top piece vin position .1.

-. fand is and permit pressure to beapplied in all directions against the picker. The shaping piece abut-s against the cast-iron basin as indi cated in Fig. 4 along the side 44 and thus effects a stop for the action of the pressure exerted by the sider piece 10 which is actuated by the piston 12. Av bolt 2O offers a hold.- ing means for tbesprings 21 which are fastened, for convenience, at their other ends to the pipes 22. Referring particularly to Figs. 1 and 2, it may be noted that the moulds are fastened to the four corners of the basin, the side pieces 7 being securely bolted to the basin by means of the bolts 8, 8.

Cylinders 25, as shown in Figs. 3 and 4, are

identical in construction and yare composed oi' a c linder wall 26 provided with suitable pac ing glands and packing 27. They are securely olted to the basin by means of bolts 28 and are positioned midway between the moulds, thus permitting the pistons 11 and 12 to exert pressure in a horizontal direction against the side pieces 9 and 10. The pressure pipes 22 are provided with check valves 29 for the purposefof regulating the pressure on each of the four cylinders. The side ieces 9 and 10, which are aetuatedby the pistons 11 and 12, are normally positioned away from the'mould when there is no pressure on the cylinder by reason of the restraining action of the springs 21 and 30.y The springs 21 are conveniently fastened to the members 1() and the pipes, as described heretefore, the springs 30 are fastened to the f members VlOby means ofthe eye-bolts 31. It is teA be1 noted that the side pieces 9 require two springs, this provision being made due to the length of the side piece, and that these springs are not fastened rigidly to the basin, as in' the case of the springs 21, but resiliently join the side pieces 9 of the adjacent moulds.

` Referring to Figs. 1 and 2 particularly, the cast-iron cooling basin is provided with a.

'waste pipe 32 which is arranged flush with the bottom ofthe basin which is. slightly tapered toward this point and adapted to carry away all of the waste cooling water and oil in the basin. The water supply pipe 33 is arranged to be controlled bythe valve 34 rovided with an elbow 35 inside of the basin whereby the water may enter the basin without splashing. The overflow pipe 36 is definitely arrangedto limit the water level in the basin to a predetermined height and is always connected so as to carry away any waste water. YReferring to Figs. 2 and 5.r

it may be noted that the pressure pipes 22 are connected to the valve 37 whichis arranged, when the handle 38 is in its up position, to join the pressure pipe 39 directly to pipes 22 and, therefrom to the cylinders 25. The linkage/10 is provided to actuate valve 41 simultaneously with valve 37 whereby the valve 41 closes the waste pipe. 32, thusy allowing the water level to rise in the basin ter level in the trough to fall and thus empty the basin.-

The completed picker unit 46 is shown in v Fig. 7 The yunits 46 are riveted after the unit is moulded to further secure the elements together, after which, the moulded piece is cut along the line 47-47 thus obtaining two completev pickers. The rivets appear at 48.

In practicing my invention, the com Joncnt parts ofthe picker are assembled as iercto` fore described andvfastened in proper relationshi p to each other by means of a tack or other suitable means. This structure is then immersed in hot wax or other impregnating compound until perfectly pliable and flexible.r The unit is then placed in position in the moulds, the rounded portion 49 of the structure abutting against the shaping piece 15 and the lugs 50 fitting into the aperture 14', as shown in Fig. 6. The base member 14 is then positioned against the side piece of the mould 7 with the shaping piece abutting' on the side pieces 9 and 10 by their respective f pistons. This is accomplished by raising the lever 38,- which, when the element to be moulded is being put in place, is in its downward or exhaust position, to its upward or pressure position. By this means, the pressure existing in pipe 39 is allowed to pass through the valve 37 to the four pressure pipes leading to the cylinders 25 through the check valves `29.- Due to'this action, the side pieces 9 and 10 close and exert a pressure Vupon the unit positioned in the mould. The

flanges 23 ofz the toppiece 19 cooperate with the grooves 24 in the two side pieces so as to allow the pressure thus exerted to kpush against the leather in all directions. v Durinfr the time that the pistons have come to their Full limit ofthe travel and the picker is compressed to the desired size and shape, and simultaneously with the' applying of the i pressure', valve 41 hasclosed the waste pipe 82, thusallowingthe water level in the cooling basin to rise to the top of the overflow pipe 36. vThe water thus flooding the basin cools the pickers. When the pickers have vcooled sufficiently to solidify the wax or other maybe noted that the springs 43 act to pushY tlie'bcttom piece 14: away from the side piece 7, thus eifectively freeing the moulded picker from all the side pieces of the mould'. The top piece 19 and the filler member lS'are then removed and the completed picker unit i6 is easily removed. To further secure the ele-r ments together7 this unit is now riveted, as shown in Fig. 6, by means of the rivets 48. The unit thus formed comprises two pickers and in order to secure the final article, it must bey cut along the lines -47, thus forming two complete loom pickers.

The flanges 23 of the top piece 19 are wedge shape and the grooves 24 are' correspondingly shaped. Hence, the side pieces 7 and 9, when they move together, have the effect of forcing l the top piece downward to compress rvthe picker in a vertical direction.

lt is to be particularly noticed that in this process, eight pickersarev formed in one operation by one attendant in a very short space of time. The unit thus formed can be subjected to any desired pressure and thus be :securely and 'firmly cemented together.

not limited to the specificembodiment shown,

and that various deviations may be madey therefrom without departing from the spirit Vand scope of the appended claims.

. Y l. claim:

l.' In a machinefor forming loom pickers,

thecombination ofan open-topped cooling basir. a plurality of moulds mounted therein,

means adapted to exert apressure on said moulds, and a cooling system co-operating therewith to circulate the coolant within the basinand about said moulds. f

' 2. ln amachine for forming loom" pickers, the combination of ya cooling basin and ya mould mounted therein consisting of a stationary side` piece, two pressure-exerting side pieces, a base plate Vhaving secured thereona suitable shaping device, atlangedtop piece,

andv a filler member adapted to co-operate with said base plate and top piece. l

3. ln a machine for forming loom pickers, the combination of an yopen-topped cooling basin, aplurality ofmoulds mounted therein and having movable side pieces, pressureexertingmeans consisting of cylinders `disposed between adjacent m'olds, pistons operatin(r therefrom and eXertinsr pressure againsty the side Vpieces of said moulds7 and a cooling system co-operating therewith for r'circulating Vfluid through the basin and about said moulds.

It will be understood that lthe invention'is 4. vIn a machine for forming loom pickers,

theY combination of acooling basin substantially recetangular in shape, moulds arranged inthe four corners thereof adjacent they side walls of said basin, the moulds comprising movable side-pieces, resilient means for retracting some of said pieces, and means for actuating said side last-named plates and exertingja pressure thereon. f

consisting Ofa stationary side piece, twov movable side piecesA having pressure means cooperating therewith, a yieldable' base plate, a shaping piece mounted on the base plate,va flanged *top piece-cooperating with the stationary side piece and one movable side piece,

and a filler member co-operating with and fitting into the groove provided in the top piece and the base plate. i y

' 6. In a machine for forming loom pickers, the combination of a cooling basin substantially rectangularl in shape,'moulds arranged* in the four corners and secured to the side walls of said basin, springs co-,operating with part of the side walls of said moulds whereby for actuating said rside plates and exerting a pressure thereon, and acoohng system copressure has been applied;

7.' In amachinefor yforming loom pickers,

y the combination of a basin having connections for a cooling medi-um, aplurality of moulds mounted in the basin, pressure-exerting means consisting of cylinders, pistons operatingtherefrom7 and coacting valves controlling the pressureV admitted to the cylinders and the medium for cooling the mould whereby when pressure is exerted on said moulds the cooling'inedium fills the basin.

8. A.A machine for forming loom pickers,

`comprising a basin containinga mould for shaping the picker, means for applying presf sure to said mould, means for supplying a cooling medium to said basin, means for draining said cooling medium, and means for controlling the hist-named ineansand they draining' means so that when said mould is subjected tov pressure the draining of the lbasin'is suspended toyenable the cooling medium to accumulate therein. f

9. A, machine for forming loom pickers,

Vcomprising amould for shaping the picker,l

the mould including two relatively movable side pieces, a bottom pieceand a shaping -1 piece lbetween the side pieces, la top piece having wedging engagement witlithe side pieces so that when the side pieces areactuated toward each other the top piece will be forced to compress the picker in a'direction transverse to the line of movement of the side pieces, and a third side piece movable f in adirection different from that of the firstnamed side pieces and said top'piece'.

10. In moldingapparatus,` a pluralityfof l v5. A mould for compressing loom pickers' operati-n50.therewith? to cool the mould after yso said side walls are normally retracted, means f molds having movable side pieces, said molds arranged upon the corners of a polygon, and pressure cylinders disposed between adjacent faces of each pair of molds, each cyl- 5inder having a plunger for coaction with the `movable side pieces of the molds between which it is arranged.

11. In molding apparatus, 'a plurality of molds having movable side pieces, said molds m y' arranged upon the corners of a polygon, pressure cylinders disposed between adjacent faces of each pair of molds, each cylinder having a plunger for co-action with the movable side pieces of the molds between which 15 it is arranged, and means for simultaneously actuating the plungers of all of said pressure cylinders. f

12. In molding apparatus, a plurality of molds having movable side pieces,'said molds 20 arranged upon the corners of a polygon, and

means disposed between adjacent faces of each pair of molds and co-actingwitl1 the movable side pieces at such faces of each thereof for exerting pressure against-the side 25 pieces. U

13. A mold comprising a base, stationary and `movable side pieces and atop piece, means for moving the movable side piece toward the stationary side piece, andmeans :zo upon the stationary and movable side pieces co-acting with the top piece for urging the top piece toward the base.

kWILLIAM A. BOHNE.

5 f if 

